08 — Deploy and Runtime Verification

Submodules: launch-day-sequence (go-live checklist, sitemap, social) | ci-cd-pipeline (GH Actions, PR tests, previews) | uptime-and-health (endpoints, UptimeRobot, /status) | changelog-and-releases (conventional commits, semver) | backup-and-disaster-recovery (D1 Time Travel, D1→R2, KV dump, restore) | gh-fix-ci (debug failing PR checks) | service-worker (Workbox cache strategies, offline fallback, background sync, push) | font-subsetting (glyphhanger, WOFF2, self-host R2, preload, budget ≤100KB) | critical-css (critters inline above-fold CSS, Angular built-in, Hono SSR, LCP ≤2.5s).

Mandatory Deploy Rule

Triggers: any code/content/config change. Does NOT: reading, memory writes, analysis, planning. Exceptions: user says don't | missing credentials (warn) | no wrangler.toml.

Deploy Sequence

1. tsc --noEmit 2. lint (eslint --fix && prettier --write) 3. build (if exists) 4. Analytics gate (ALL THREE REQUIRED): Sentry missing→install @sentry/cloudflare+wrap+mcp__sentry__create_project+SENTRY_DSN secret | PostHog missing→add snippet to HTML (persistence:'memory', cookie-free)+CSP | GTM missing→add container snippet (head+noscript body)+CSP 5. wrangler deploy 6. purge cache 7. wait 3-5s 8. Playwright E2E 9. visual verify 1280+375px 10. fix if needed, loop.

Workers Builds (Native CI/CD — Preferred)

Connect GitHub/GitLab in CF dashboard → auto-build+deploy on push. No self-hosted Git required. Config via wrangler.toml [build] section:

[build]
command = "npm run build"
watch_dir = "src"

[build.upload]
format = "modules"
main = "./dist/worker.js"

Env-specific builds: separate [env.staging] + [env.production] blocks. Deploy hooks: CF_PAGES_BRANCH, CF_PAGES_COMMIT_SHA env vars auto-set. Preview URLs auto-generated per branch. Workers Builds preferred over GH Actions for standard repos.

GitHub Actions (External — Full Control)

cloudflare/wrangler-action@v3 with CLOUDFLARE_API_TOKEN → deploy → purge → smoke test. Gate: lint+typecheck+vitest before deploy job. Use when: monorepo, custom build steps, cross-service orchestration.

Wrangler Best Practices

Secrets: wrangler secret put KEY (never in source) | .dev.vars local (gitignored) | --secrets-file for CI batch. Set compatibility_date to today on new projects. Run wrangler types to generate binding types (never hand-write Env). Each env = separate Worker with distinct bindings. nodejs_compat flag for Node built-ins. Version: check wrangler --version ≥ 3.4.0 for Time Travel support.

Workers Observability

Enable logs+traces before first production deploy. Structured JSON: console.log({event, userId, duration}) — searchable+filterable in CF dashboard. Use console.error/console.warn for severity. Control cost via head_sampling_rate. Never passThroughOnException() — explicit try/catch only. Never store request-scoped data in module-level globals (isolate reuse = cross-request leaks). Tail Workers for real-time log streaming.

Cache Strategy

Purge everything after every deploy. Static: max-age=31536000, immutable. HTML: max-age=0, must-revalidate. API: no-store. Use CF Cache API + KV for edge caching. Purge:

curl -X POST "https://api.cloudflare.com/client/v4/zones/$CF_ZONE_ID/purge_cache" \
  -H "Authorization: Bearer $CF_API_TOKEN" --data '{"purge_everything":true}'

D1 Time Travel (Always-On PIT Recovery)

No config needed. Paid: 30-day lookback. Free: 7-day. CLI commands (requires Wrangler ≥3.4.0):

# List bookmarks (timestamps available for restore)
wrangler d1 time-travel info DB_NAME

# Restore to specific timestamp (destructive — overwrites in place)
wrangler d1 time-travel restore DB_NAME --timestamp=UNIX_EPOCH_SECONDS

# Restore to bookmark ID
wrangler d1 time-travel restore DB_NAME --bookmark=BOOKMARK_ID

# Save current state as named bookmark before risky migration
wrangler d1 time-travel info DB_NAME  # note current bookmark, pass to restore if migration fails

Returns previous bookmark for undo. No clone/fork support. Use for: accidental deletes, bad migrations, data corruption.

D1 → R2 Long-Term Backup

Retention beyond 30 days: Cron trigger (0 0 * * *) → Workflow calls D1 export endpoint → polls for signed URL → streams SQL dump to R2 d1-backups/{date}/. Built-in Workflow retries. R2 lifecycle rules auto-delete after 90 days. Zero egress on restore.

# Manual export
wrangler d1 export DB_NAME --output=backup-$(date +%Y%m%d).sql

# Restore from exported SQL
wrangler d1 execute DB_NAME --file=backup-20260101.sql

Rollback

Fix forward (default): small, quick, no corruption, no active user impact. Rollback trigger: critical (auth/payments), corruption risk, complex, active users.

# List recent deployments
wrangler deployments list

# Rollback to specific deployment (last stable = omit [deployment-id])
wrangler rollback [deployment-id]

# Rollback specific environment
wrangler rollback --env production [deployment-id]

P1 auto-rollback: Sentry alert → Inngest → wrangler rollback → Slack+SMS.

Wrangler Secrets Management

# Set secret (interactive prompt for value)
wrangler secret put SECRET_NAME

# Set secret for specific env
wrangler secret put SECRET_NAME --env production

# Batch secrets from file in CI
wrangler secret bulk .secrets.json

# List secrets (names only, values never exposed)
wrangler secret list

# Delete secret
wrangler secret delete SECRET_NAME

Never commit secrets. .dev.vars = local only (gitignored). CI: use GitHub Secrets → --secrets-file or individual wrangler secret put.

Post-Deploy Checklist (MUST RUN BEFORE REPORTING)

Immediate: Playwright 200 (not 403/challenge) | no "Just a moment" | newest feature tested E2E | AI visual screenshot | all pages 200 | images/CSS/JS load | no console errors | JSON-LD+OG+favicon+analytics | a11y (skip link, landmarks, focus-visible, reduced-motion) | manifest validates | PWA screenshots | humans.txt | security.txt | cross-site links. Visual: layout 1280+375px correct | no h-scroll/overlap/cutoff | footer bottom | brand colors | typography | crisp images | hover states. Functional: nav | forms | auth | APIs | error pages | rate limiting | CSP | CORS | /health returns 200+JSON.

Post-Deploy Automation (CI)

- run: curl -sf "$PROD_URL/health" | jq .status
- run: npx playwright test tests/smoke.spec.ts
- run: curl -X POST .../purge_cache --data '{"purge_everything":true}'

Cross-browser: Chromium every deploy. Firefox+WebKit first deploy only. Playwright toHaveScreenshot() for visual regression baseline.

Environment Parity

Watch: CSP | CORS | CDN caching | DNS | TLS | env vars | rate limiting | Worker size. Always test prod. Env-specific secrets: wrangler secret put KEY --env staging.

Workflows v2 Awareness

Rearchitected control plane (April 2026): higher concurrency + creation rate limits. Use for: D1 exports, long-running multi-step jobs, auto-remediation pipelines. Queues for single-step fan-out. ctx.waitUntil() for background work after response (30s limit).

Post-Build Critique (MANDATORY)

Generate self-critique (visual, content, performance, a11y, SEO, security). Deliver to: /admin dashboard | email (Resend to brian@megabyte.space) | top 3 in conversation.

/admin (MANDATORY every site)

AI chat | build history | critique history | quick actions (purge, tests, analytics). Protected by API key or CF Access.

Third-Party Health (every deploy)

YouTube embeds | Google Maps | Stripe sessions | GA4/GTM fires.

GitHub Auto-Config (first deploy)

gh repo edit --description/--homepage/--add-topic